A heater is an important feature in a fish aquarium. Fish do not self-regulate their body heat. Their temperature depends entirely on their environment. Therefore, they require consistency in that regard. The water temperature is a crucial factor in the life of a fish.

Four Types of Fish Tank Heaters

Immersible

Submersible

Substrate

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The choices can be overwhelming, so it is best to fit the heater to whatever the needs are for your particular tank. Some of the aquarium heaters that are used underwater have an automatic switch-off when they are removed from the tank. Substrate heaters will heat the roots of live plants, encouraging growth and vitality. Other heaters are designed to work with larger tanks, smaller tanks, or saltwater or freshwater tanks. Most heaters can be ordered online.